US7850091B2 - Fuel injector with directly triggered injection valve member - Google Patents

Fuel injector with directly triggered injection valve member Download PDF

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Publication number
US7850091B2
US7850091B2 US11/721,982 US72198205A US7850091B2 US 7850091 B2 US7850091 B2 US 7850091B2 US 72198205 A US72198205 A US 72198205A US 7850091 B2 US7850091 B2 US 7850091B2
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United States
Prior art keywords
hydraulic chamber
control piston
valve member
injection valve
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US11/721,982
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English (en)
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US20090266921A1 (en
Inventor
Friedrich Boecking
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOECKING, FRIEDRICH
Publication of US20090266921A1 publication Critical patent/US20090266921A1/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0059—Arrangements of valve actuators
    • F02M63/0061—Single actuator acting on two or more valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Definitions

  • fuel injectors are used, with which fuel that is at high pressure is injected into the combustion chambers of the engine.
  • Such fuel injectors which are used for instance in self-igniting internal combustion engines, include an injector housing, which is in communication with a high-pressure source located outside the fuel injector, such as a high-pressure collection chamber (common rail). The high-pressure collection chamber is supplied in turn with fuel that is at high pressure via a high-pressure pump.
  • German Patent Disclosure 10 2004 037 125.3 relates to a common rail injector including an injector housing with a fuel inlet, which is in communication with a central high-pressure fuel source outside the injector housing and with a pressure chamber inside the injector housing. From the latter, as a function of the pressure in a nozzle needle control chamber, fuel subjected to high pressure is injected into a combustion chamber of an internal combustion engine when a nozzle needle lifts from its seat.
  • the nozzle needle control chamber is in communication with an actuator pressure chamber that is defined by an actuator, which is preferably a piezoelectric actuator.
  • a throttle device is disposed, which upon evacuation of the nozzle needle control chamber makes possible a smaller flow rate from the nozzle needle control chamber into the actuator pressure chamber than upon filling of the nozzle needle control chamber from the actuator pressure chamber into the nozzle needle control chamber.
  • the throttle device is designed and disposed such that it develops its throttling action only upon evacuation of the nozzle needle control chamber, while upon filling of the nozzle needle control chamber it does not develop any throttling action but instead assures an unhindered flow through of fuel.
  • the throttle device includes a throttle piston, which has a through hole that makes a throttled flow through of fuel from the nozzle needle control chamber into the actuator pressure chamber possible.
  • the term used is also direct control, or in other words a direct control of the injection valve member, which for example may be embodied as a nozzle needle.
  • the fuel injector proposed in accordance with the invention is distinguished by a very simple, compact construction.
  • a piston that can be embodied in steplike form (stepped piston) associated with an actuator the opening of the injection valve member is achieved in a very simple way.
  • the actuator in particular a piezoelectric actuator, is received in a hollow chamber, into which a line from a high-pressure collection chamber (common rail) discharges.
  • the stepped piston that can be acted upon directly by the actuator is on the one hand surrounded by a sleeve defining a first hydraulic chamber; on the other hand, part of the piston that can be embodied in steplike form is guided in a control piston.
  • the stepped piston with an annular face at the transition in diameter, defines a first hydraulic chamber, and with an end face embodied with a lesser diameter, it defines a second hydraulic chamber inside the control piston.
  • a further, third hydraulic chamber is embodied; the second and third hydraulic chambers communicate hydraulically via a conduit that contains a throttle restriction.
  • a driver which is received on the circumference of the injection valve member, is movable.
  • the injection valve member is placed relative to the control piston such that the mechanical driver, which can be embodied for instance as a disk or ring, always rests on a stop of the recess inside the control piston.
  • the actuator which is received in the hollow chamber of the fuel injector is triggered inversely.
  • the control piston moves into this hydraulic chamber. Simultaneously, by means of the piston, the second hydraulic chamber inside the control piston is relieved, which thus reinforces the opening of the injection valve member.
  • the third hydraulic chamber is also pressure-relieved, since it communicates with the second hydraulic chamber through a conduit.
  • the control piston communicates via the mechanical driver with the injection valve member, so that upon pressure relief of the first hydraulic chamber by upward motion of the stepped piston as the control piston is moving into the first hydraulic chamber, the injection valve member is pulled upward.
  • the opening of the nozzle needle is thus based on two effects, namely the pressure relief of the first hydraulic chamber upon upward motion of the stepped piston, and the associated pulling upward of the injection valve member that can be embodied as a nozzle needle by the mechanical driver and by the pressure relief of the two hydraulic chambers embodied in the control piston. Because of the pressure reduction in the two hydraulic chambers embodied in the control piston, or in other words in the second and third hydraulic chambers, a delayed pressure reduction takes place, so that the injection valve member lifts from the mechanical driver and automatically opens wider, without requiring that the piezoelectric actuator be moved farther.
  • the way proposed by the invention of attaining the above object is distinguished by its simple construction and by the fact that the stepped piston not only actuates the control piston into which the injection valve member is guided but also assures a pressure reduction or pressure increase in the two communicating second and third hydraulic chambers. Since the second hydraulic chamber and the third hydraulic chamber are coupled together via a conduit that contains a throttle restriction, the pressure reduction in the third hydraulic chamber takes place in delayed fashion, compared with the pressure reduction in the second hydraulic chamber, so that the possibility exists that the injection valve member is capable of moving relative to the control piston and in particular automatically opens wider upon the opening event without requiring that the actuator be moved farther.
  • FIGURE shows a cross section through the fuel injector proposed according to the invention.
  • FIGURE shows a cross section through the fuel injector proposed according to the invention.
  • a fuel injector 10 includes an injector body 12 , in which a hollow chamber 84 is embodied. Discharging into the hollow chamber 84 is a line 82 , which extends between the injector body 12 of the fuel injector 10 and a high-pressure collection chamber 80 . Instead of the high-pressure collection chamber 80 , a different high-pressure source could be used in order to supply the hollow chamber 84 of the fuel injector 10 with fuel that is at high pressure.
  • An actuator 14 is received inside the hollow chamber 84 , in the upper region of the fuel injector 10 .
  • the actuator 14 is preferably a piezoelectric actuator, which includes a number of piezoelectric crystals 16 which are disposed in stacked fashion one above the other.
  • the actuator 14 is connected to a voltage source. Upon subjection of the actuator 14 to a voltage, the individual piezoelectric crystals of a piezoelectric crystal stack lengthen; upon termination of the application of a voltage to the piezoelectric crystal stack of the actuator 14 , the piezoelectric crystal stack resumes its original length.
  • the piezoelectric crystal stack 16 of the actuator 14 is surrounded by a spring 18 embodied as an annular spring. Both the spring 18 and the piezoelectric crystal stack 16 rest on an end face 22 of a stepped piston 20 .
  • the piston 20 likewise received in the hollow chamber 84 is surrounded by a control chamber sleeve 26 .
  • the stepped piston 20 includes a first region, which is embodied with a first diameter 74 , and a second region, which is embodied with a second diameter 76 .
  • the first diameter 74 is dimensioned as larger than the second diameter 76 .
  • a first hydraulic chamber 24 is formed inside the control chamber sleeve 26 that surrounds the piston 20 .
  • a first face end 38 of a control piston 36 can be acted upon.
  • annular face identified by reference numeral 32 develops, which defines the first hydraulic chamber 24 that is furthermore defined by the inner circumferential surface of the control chamber sleeve 26 , by a first face end 38 of the control piston 36 , and by parts of the plane face 72 of the injector body 12 .
  • the region of the stepped piston 20 embodied with the second diameter 76 acts upon a second hydraulic chamber 34 , which is embodied in the control piston 36 .
  • the second hydraulic chamber 34 communicates hydraulically with a third hydraulic chamber 66 inside the control piston 36 via a conduit containing a throttle restriction 42 .
  • An end face 44 of an injection valve member 46 protrudes into the third hydraulic chamber 66 .
  • the injection valve member 46 is guided in the control piston 36 .
  • a hollow chamber 52 is embodied, inside of which a mechanical driver 50 is capable of moving.
  • the mechanical driver 50 may for example be embodied as a ring or as a disk, which is received in an annular groove 48 on the circumference of the injection valve member 46 .
  • the mechanical driver 50 rests on a stop that defines one end of the hollow chamber 52 .
  • the mechanical driver 50 is retained as a result of the fact that a spring 54 has one end braced on a second face end 40 of the control piston 36 , and its second end braced on a support disk 56 , provided in a groove 58 , on the outer circumference of the injection valve member 46 and positions the injection valve member 46 relative to the control piston 36 .
  • a first face end 38 of the control piston 36 can be acted upon by the first hydraulic chamber 24 .
  • the control piston 36 is received in a further hollow chamber in the interior of the injector body 12 , into which chamber fuel enters from the hollow chamber 84 via a high-pressure inlet 30 .
  • the pressure level inside the hollow chamber 84 , the first hydraulic chamber 24 , and the hollow chamber surrounding the control piston 36 is designated p 1 .
  • the respective pressure prevailing in the second hydraulic chamber 36 is designated p 2
  • the pressure prevailing in the third hydraulic chamber 66 is designated p 3 .
  • the control piston 36 has a jacket face 68 surrounded by fuel and is guided in a guide 70 that is embodied in the injector body 12 .
  • Reference numeral 78 represents the fuel flow which develops from the hollow chamber 84 , in which the actuator 14 is received, via the high-pressure inlet 30 into the hollow chamber in which the control piston 36 is movably guided.
  • the mode of operation of the fuel injector proposed according to the invention is as follows:
  • the injection valve member 46 Upon inverse triggering of the actuator 14 , the injection valve member 46 is in its closing position when the actuator 14 is supplied with current.
  • the injection valve member 46 is in its closing position. In this state, the injection openings 86 into the combustion chamber of an internal combustion engine are closed; the nozzle tip 62 is located in the nozzle seat 64 .
  • the actuator 14 is connected to a voltage source, so that the piezoelectric crystal stack 16 lengthens in accordance with the number of piezoelectric crystals present in it, and the stepped piston 20 is subjected to pressure.
  • the fuel volume present in the first hydraulic chamber 24 is compressed, and the first face end 38 of the control piston 36 is acted upon.
  • the pressure in the third hydraulic chamber 66 also increases, so that the control piston 36 and the injection valve member 46 guided in it are placed in the nozzle seat 64 . No fuel injection occurs.
  • the opening of the injection valve member 46 is effected by canceling the subjection of the actuator 14 to voltage.
  • the individual piezoelectric crystals inside the piezoelectric crystal stack 16 resume their original shape upon cancellation of the subjection of the actuator 14 to voltage; that is, the stepped piston 20 moves upward, thus causing a pressure relief of the first hydraulic chamber 24 .
  • the control piston 36 moves with its first face end 38 into the first hydraulic chamber 24 .
  • the mechanical driver 50 received on the circumference of the injection valve member 46 , rests on the lower stop of the hollow chamber 52 .
  • the injection valve member 46 is pulled upward by the mechanical driver 50 surrounded by the control piston 36 , and the nozzle tip 62 of the injection valve member 46 is moved out of its nozzle seat 64 , so that the injection openings B 6 on the combustion chamber end of the fuel injector 10 are opened, and an injection of fuel into the combustion chamber takes place.
  • the second hydraulic chamber 34 is furthermore pressure-relieved.
  • the length of the relative motion that occurs between the control piston 36 and the injection valve member 46 depends on the length of the hollow chamber 52 in the axial direction of the injection valve member 46 . Because of the length of the stroke that the mechanical driver 50 , locked onto the injection valve member 46 , is capable of executing in the hollow chamber 52 , a relative motion of the injection valve member 46 relative to the control piston 36 is possible upon opening, and an automatic opening of the injection valve member 46 is attainable without requiring that the actuator 14 be moved farther.
  • the delay of the pressure reduction in the third hydraulic chamber 66 can be adjusted.
  • the opening behavior of the fuel injector of the injection valve member 46 can be optimally adapted to the load state of the engine.
  • the construction shown in the drawing of the fuel injector 10 is striking in its simplicity, since the injection valve member 46 that can preferably be embodied as a nozzle needle and the stepped piston 20 are both guided in one and the same control piston 36 .
  • the control piston 36 is in turn centered and guided with its jacket face 68 in the guide 70 of the injector body 12 .
  • the filling of the first hydraulic chamber 24 inside the fuel injector 10 takes place via gap flows between the control chamber sleeve 26 and the stepped piston 20 since the hollow chamber 84 in which the aforementioned components are received is subjected to fuel that is at high pressure.
  • the control piston 36 is guided by the guide face 70 inside the injector body 12 of the fuel injector 10 .
  • the filling of the second hydraulic chamber 34 and the third hydraulic chamber 66 is effected via the hollow chamber, embodied in the lower region of the fuel injector 10 , to which fuel that is at high pressure flows in the direction of the arrow 78 from the hollow chamber 84 .
  • the hydraulic chambers 34 and 66 are subjected to fuel.
  • the control piston 36 initially executes an opening motion and carries the injection valve member 46 along with it via the mechanical driver 50 .
  • the mechanical driver 50 lifts from its stop, shown in the drawing, on the lower end of the control piston 36 , so that a wider opening of the injection valve member 46 takes place.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US11/721,982 2004-12-23 2005-11-24 Fuel injector with directly triggered injection valve member Expired - Fee Related US7850091B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004062006 2004-12-23
DE102004062006A DE102004062006A1 (de) 2004-12-23 2004-12-23 Kraftstoffinjektor mit direkt angesteuertem Einspritzventilglied
DE102004062006.7 2004-12-23
PCT/EP2005/056185 WO2006069865A1 (de) 2004-12-23 2005-11-24 Kraftstoffinjektor mit direkt angesteuertem einspritzventilglied

Publications (2)

Publication Number Publication Date
US20090266921A1 US20090266921A1 (en) 2009-10-29
US7850091B2 true US7850091B2 (en) 2010-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/721,982 Expired - Fee Related US7850091B2 (en) 2004-12-23 2005-11-24 Fuel injector with directly triggered injection valve member

Country Status (4)

Country Link
US (1) US7850091B2 (de)
EP (1) EP1831540B1 (de)
DE (2) DE102004062006A1 (de)
WO (1) WO2006069865A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100050990A1 (en) * 2007-01-09 2010-03-04 Hans-Christoph Magel Injector for injecting fuel into combustion chambers of internal combustion engines
US8997718B2 (en) 2008-01-07 2015-04-07 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
US9091238B2 (en) 2012-11-12 2015-07-28 Advanced Green Technologies, Llc Systems and methods for providing motion amplification and compensation by fluid displacement
US20150308349A1 (en) * 2014-04-23 2015-10-29 General Electric Company Fuel delivery system
US20150369177A1 (en) * 2014-06-18 2015-12-24 Caterpillar Inc. Engine system having piezo actuated gas injector
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007543A1 (de) * 2005-02-18 2006-08-24 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadelsteuerung für eine Brennkraftmaschine
DE102006027327B4 (de) 2006-06-13 2018-08-02 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadelsteuerung
DE102009024596A1 (de) * 2009-06-10 2011-04-07 Continental Automotive Gmbh Einspritzventil mit Übertragungseinheit
DE102009024595A1 (de) 2009-06-10 2011-03-24 Continental Automotive Gmbh Einspritzventil mit Übertragungseinheit
HUE027556T2 (en) * 2012-06-13 2016-10-28 Delphi Int Operations Luxembourg Sarl atomizer
DE102012212266B4 (de) * 2012-07-13 2015-01-22 Continental Automotive Gmbh Fluidinjektor
DE102012212264B4 (de) 2012-07-13 2014-02-13 Continental Automotive Gmbh Verfahren zum Herstellen eines Festkörperaktuators
WO2014144807A1 (en) * 2012-11-12 2014-09-18 Mcalister Technologies, Llc Systems and methods for providing motion amplification and compensation by fluid displacement
DE102016220326A1 (de) 2016-10-18 2018-04-19 Robert Bosch Gmbh Ventil zum Zumessen eines gasförmigen oder flüssigen Kraftstoffs
CZ308825B6 (cs) * 2020-10-20 2021-06-16 MOTORPAL, a.s. Aktuátor pro řízení dávky paliva

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Publication number Priority date Publication date Assignee Title
US4544096A (en) * 1983-07-28 1985-10-01 Energy Conservation Innovations, Inc. Electronically controlled fuel injection system for diesel engine
EP0324905A1 (de) 1988-01-21 1989-07-26 Toyota Jidosha Kabushiki Kaisha Kraftstoffeinspritzventil für einen Motor
US5697554A (en) * 1995-01-12 1997-12-16 Robert Bosch Gmbh Metering valve for metering a fluid
US6168133B1 (en) * 1997-10-02 2001-01-02 Robert Bosch Gmbh Piezoelectrically actuated fuel injection valve
US6298829B1 (en) 1999-10-15 2001-10-09 Westport Research Inc. Directly actuated injection valve
US20010032612A1 (en) 1999-10-15 2001-10-25 Welch Alan B. Directly actuated injection valve
US20010035164A1 (en) 1999-10-15 2001-11-01 Irawan Rahardja Directly actuated injection valve with a composite needle
US20010035163A1 (en) 1999-10-15 2001-11-01 Irawan Rahardja Directly actuated injection valve with a ferromagnetic needle
DE10151688A1 (de) 2001-10-19 2003-04-30 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
US6681999B1 (en) * 1999-11-13 2004-01-27 Robert Bosch Gmbh Fuel injection valve
US6732949B1 (en) * 1999-11-25 2004-05-11 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US6820827B1 (en) * 1999-10-14 2004-11-23 Robert Bosch Gmbh Injector for a fuel injection system for internal combustion engines, having a nozzle needle protruding into the valve control chamber
US7100577B2 (en) * 2004-06-14 2006-09-05 Westport Research Inc. Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same
US7455244B2 (en) * 2004-02-04 2008-11-25 Robert Bosch Gmbh Fuel injector with direct-controlled injection valve member

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004035313A1 (de) * 2004-07-21 2006-02-16 Robert Bosch Gmbh Kraftstoffinjektor mit zweistufigem Übersetzer
DE102004037125A1 (de) 2004-07-30 2006-03-23 Robert Bosch Gmbh Common-Rail-Injektor

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544096A (en) * 1983-07-28 1985-10-01 Energy Conservation Innovations, Inc. Electronically controlled fuel injection system for diesel engine
EP0324905A1 (de) 1988-01-21 1989-07-26 Toyota Jidosha Kabushiki Kaisha Kraftstoffeinspritzventil für einen Motor
US4909440A (en) 1988-01-21 1990-03-20 Toyota Jidosha Kabushiki Kaisha Fuel injector for an engine
US5697554A (en) * 1995-01-12 1997-12-16 Robert Bosch Gmbh Metering valve for metering a fluid
US6168133B1 (en) * 1997-10-02 2001-01-02 Robert Bosch Gmbh Piezoelectrically actuated fuel injection valve
US6820827B1 (en) * 1999-10-14 2004-11-23 Robert Bosch Gmbh Injector for a fuel injection system for internal combustion engines, having a nozzle needle protruding into the valve control chamber
US20010035163A1 (en) 1999-10-15 2001-11-01 Irawan Rahardja Directly actuated injection valve with a ferromagnetic needle
US20010035164A1 (en) 1999-10-15 2001-11-01 Irawan Rahardja Directly actuated injection valve with a composite needle
US20010032612A1 (en) 1999-10-15 2001-10-25 Welch Alan B. Directly actuated injection valve
US6298829B1 (en) 1999-10-15 2001-10-09 Westport Research Inc. Directly actuated injection valve
US6681999B1 (en) * 1999-11-13 2004-01-27 Robert Bosch Gmbh Fuel injection valve
US6732949B1 (en) * 1999-11-25 2004-05-11 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE10151688A1 (de) 2001-10-19 2003-04-30 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
US20040154562A1 (en) 2001-10-19 2004-08-12 Patrick Mattes Valve for controlling liquids
US7455244B2 (en) * 2004-02-04 2008-11-25 Robert Bosch Gmbh Fuel injector with direct-controlled injection valve member
US7100577B2 (en) * 2004-06-14 2006-09-05 Westport Research Inc. Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100050990A1 (en) * 2007-01-09 2010-03-04 Hans-Christoph Magel Injector for injecting fuel into combustion chambers of internal combustion engines
US8069840B2 (en) * 2007-01-09 2011-12-06 Robert Bosch Gmbh Injector for injecting fuel into combustion chambers of internal combustion engines
US8997718B2 (en) 2008-01-07 2015-04-07 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
US9091238B2 (en) 2012-11-12 2015-07-28 Advanced Green Technologies, Llc Systems and methods for providing motion amplification and compensation by fluid displacement
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems
US20150308349A1 (en) * 2014-04-23 2015-10-29 General Electric Company Fuel delivery system
US9803555B2 (en) * 2014-04-23 2017-10-31 General Electric Company Fuel delivery system with moveably attached fuel tube
US20150369177A1 (en) * 2014-06-18 2015-12-24 Caterpillar Inc. Engine system having piezo actuated gas injector
US9562497B2 (en) * 2014-06-18 2017-02-07 Caterpillar Inc. Engine system having piezo actuated gas injector

Also Published As

Publication number Publication date
DE102004062006A1 (de) 2006-07-13
DE502005010399D1 (de) 2010-11-25
WO2006069865A1 (de) 2006-07-06
US20090266921A1 (en) 2009-10-29
EP1831540A1 (de) 2007-09-12
EP1831540B1 (de) 2010-10-13

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